Income From Continuing Operations Per Share (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Dec. 28, 2018	Dec. 29, 2017	Dec. 28, 2018	Dec. 29, 2017
Earnings Per Share [Abstract]
Income from continuing operations	$ 225	$ 131	$ 441	$ 296
Adjustments for participating securities outstanding	0	(1)	(1)	(1)
Income from continuing operations used in per basic and diluted common share calculations (A)	$ 225	$ 130	$ 440	$ 295
Basic weighted average common shares outstanding (B) (in shares)	117,700,000	118,500,000	117,800,000	118,800,000
Impact of dilutive share-based awards (in shares)	2,300,000	2,400,000	2,500,000	2,300,000
Diluted weighted average common shares outstanding (C) (in shares)	120,000,000	120,900,000	120,300,000	121,100,000
Income from continuing operations per basic common share (A)/(B) (in dollars per share)	$ 1.91	$ 1.10	$ 3.74	$ 2.49
Income from continuing operations per diluted common share (A)/(C) (in dollars per share)	$ 1.88	$ 1.08	$ 3.66	$ 2.44
Outstanding antidilutive employee stock options (in shares)	399,243	222	279,705	81,496